Table 3. Weighted proportion [and 95% confidence interval] of mild cognitive impairment by social disconnectedness and perceived isolation.

	Social Disconnectedness		Perceived Isolation
Variable	Average or Below	Above Average	Average or Below	Above Average
Gender
Female	21.7 [18.0–25.5]	32.8 [28.1–37.6]	22.3 [18.3–26.3]	33.3 [28.3–38.3]
Male	26.3 [21.5–31.0]	31.2 [26.2–36.2]	24.9 [20.7–29.1]	33.3 [27.8–38.7]
Age
65–74 years old	18.5 [15.1–21.9]	22.8 [19.0–26.6]	16.3 [13.2–19.3]	26.6 [21.9–31.4]
75 years and older	36.5 [29.8–43.3]	49.7 [43.9–55.4]	40.6 [34.3–46.8]	46.3 [41.2–51.4]
Education
< High school	67.0 [51.6–82.5]	65.9 [54.3–77.5]	60.7 [48.6–72.7]	71.1 [60.0–82.2]
High school or equivalent	25.9 [19.5–32.4]	35.1 [28.4–41.8]	27.3 [19.9–34.8]	34.4 [27.1–41.8]
Vocational certificate, some college, or associate	26.3 [21.1–31.5]	32.8 [26.3–39.3]	25.9 [19.5–32.3]	34.6 [28.0–41.2]
Bachelors or more	12.5 [7.5–17.5]	14.3 [10.3–18.3]	10.8 [7.9–13.6]	17.1 [10.6–23.5]
Race
White/Caucasian	20.3 [17.2–23.3]	28.8 [25.5–32.1]	20.9 [17.9–23.9]	28.8 [25.1–32.6]
Black/African American	62.8 [50.3–75.2]	59.2 [48.2–70.2]	54.9 [43.7–66.1]	67.9 [54.7–81.0]
Other (Asian, Pacific Islander,     American Indian or Alaskan Native)	33.4 [14.5–52.4]	43.3 [26.9–59.7]	29.4 [13.6–45.2]	49.0 [32.3–65.6]
Income
$0-$24,999	44.4 [35.0–53.9]	47.7 [39.6–55.7]	43.8 [36.0–51.7]	48.9 [39.6–58.3]
$25,000-$49,999	25.6 [19.2–31.9]	32.4 [26.0–38.8]	26.7 [21.0–32.3]	32.0 [25.3–38.7]
$50,000-$99,999	16.2 [10.9–21.4]	21.1 [15.4–26.9]	13.8 [9.7–17.9]	26.3 [18.5–34.1]
$100,000 or higher	10.9 [5.5–16.3]	15.2 [7.3–23.1]	8.9 [4.6–13.2]	18.6 [9.1–28.1]